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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (FSH) causes egg to mature in females






2. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






3. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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4. (male) pushes the testes outward toward the legs for a cool-down off of the body






5. Birthing process (termination of gestation)






6. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






7. Failure to have one testis (gonad) to descend






8. Duct through penis that carries sperm and urine






9. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






10. Prevent the cow from getting an infection from the calve






11. 19-23 (21) days






12. Provide nourishment for the developing sperm






13. 24 hours before end of estrus cycle






14. Duct through penis that carries sperm and urine






15. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






16. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






17. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






18. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






19. 283 days






20. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






21. 2 month growth cycle. stored in the epididymis of the bull






22. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






23. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






24. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






25. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






26. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






27. Days which have decreasing daylight hours

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28. Animals which have only one estrous cycle (ex: dog - fox)






29. Front feet and head first. (except for hogs and dogs)






30. Animals which have only one estrous cycle (ex: dog - fox)






31. The more stressed out the male is - the less sperm he is going to produce






32. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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33. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






34. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






35. Check feet and legs - look for masculine traits in build such as crest and muscling






36. 30-38 hours after estrus cycle begins






37. Superior genes are _______ to multiply






38. 10-37 (21) days






39. 336 days






40. 1-3 days






41. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






42. Help to signal hormone levels which we need both in the brain right next to each other.






43. FEED






44. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






45. Male on one pin and female on other side






46. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






47. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






48. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






49. Depository for semen during insemination. where urine leaves the body






50. Look for infection - split - and rupture of the penis